Introducing some blue dice / Shield Dice would be interesting. As long as you have a shield point left, you roll a number of Shield Dice when defending, equal to your agility score (plus any mods, maybe the shield upgrade card could +1 your dice total). This roll would be in place of agility dice for as long as you have shields left. The dice would have an additional evade result on them, and you could also roll them against bombs and accuracy turret attacks.
You wouldn't even need to change any existing pilot cards.

I love his content as well. His enthusiasm and the way he edits his videos so we aren't bored with movement of ships is key. Clear audio is another thing he gets correct. As mentioned before, if I can't hear the commentator, I'd rather just watch ships and dice rolls.

I've had the best luck against him with my new A-Wing list that I fly. Pincer approach means I get to melt him down fast.
As mentioned, I have started to set up obstacles in columns on the board when facing large-based ships. Works wonders to make them fly bad (and thus, preventing his ability).

Green dice tend to give you all of the evades when only one or two are needed (especially when you have an evade token already), but tend to be Blank City when you need at least one to stay alive (and you're rolling 3-4 of the bastards).

Most tournament games are timed. You'd be able to get off, like, maybe 4 at most? You can't fire it off on the turn you reload, and then you'll need a target lock for most of the missiles, so your actions are spoken for.